1/*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.example.android.viewanimations;
18
19import android.app.Activity;
20import android.os.Bundle;
21import android.view.View;
22import android.view.animation.AlphaAnimation;
23import android.view.animation.Animation;
24import android.view.animation.AnimationSet;
25import android.view.animation.AnimationUtils;
26import android.view.animation.RotateAnimation;
27import android.view.animation.ScaleAnimation;
28import android.view.animation.TranslateAnimation;
29import android.widget.Button;
30import android.widget.CheckBox;
31
32/**
33 * This example shows how to use pre-3.0 view Animation classes to create various animated UI
34 * effects. See also the demo PropertyAnimations, which shows how this is done using the new
35 * ObjectAnimator API introduced in Android 3.0.
36 *
37 * Watch the associated video for this demo on the DevBytes channel of developer.android.com
38 * or on YouTube at https://www.youtube.com/watch?v=_UWXqFBF86U.
39 */
40public class ViewAnimations extends Activity {
41
42    CheckBox mCheckBox;
43
44    @Override
45    public void onCreate(Bundle savedInstanceState) {
46        super.onCreate(savedInstanceState);
47        setContentView(R.layout.activity_view_animations);
48
49        mCheckBox = (CheckBox) findViewById(R.id.checkbox);
50        final Button alphaButton = (Button) findViewById(R.id.alphaButton);
51        final Button translateButton = (Button) findViewById(R.id.translateButton);
52        final Button rotateButton = (Button) findViewById(R.id.rotateButton);
53        final Button scaleButton = (Button) findViewById(R.id.scaleButton);
54        final Button setButton = (Button) findViewById(R.id.setButton);
55
56        // Fade the button out and back in
57        final AlphaAnimation alphaAnimation = new AlphaAnimation(1, 0);
58        alphaAnimation.setDuration(1000);
59
60        // Move the button over and then back
61        final TranslateAnimation translateAnimation =
62                new TranslateAnimation(Animation.ABSOLUTE, 0,
63                Animation.RELATIVE_TO_PARENT, 1,
64                Animation.ABSOLUTE, 0, Animation.ABSOLUTE, 100);
65        translateAnimation.setDuration(1000);
66
67        // Spin the button around in a full circle
68        final RotateAnimation rotateAnimation = new RotateAnimation(0, 360,
69                Animation.RELATIVE_TO_SELF, .5f, Animation.RELATIVE_TO_SELF, .5f);
70        rotateAnimation.setDuration(1000);
71
72        // Scale the button in X and Y.
73        final ScaleAnimation scaleAnimation = new ScaleAnimation(1, 2, 1, 2);
74        scaleAnimation.setDuration(1000);
75
76        // Run the animations above in sequence on the final button. Looks horrible.
77        final AnimationSet setAnimation = new AnimationSet(true);
78        setAnimation.addAnimation(alphaAnimation);
79        setAnimation.addAnimation(translateAnimation);
80        setAnimation.addAnimation(rotateAnimation);
81        setAnimation.addAnimation(scaleAnimation);
82
83        setupAnimation(alphaButton, alphaAnimation, R.anim.alpha_anim);
84        setupAnimation(translateButton, translateAnimation, R.anim.translate_anim);
85        setupAnimation(rotateButton, rotateAnimation, R.anim.rotate_anim);
86        setupAnimation(scaleButton, scaleAnimation, R.anim.scale_anim);
87        setupAnimation(setButton, setAnimation, R.anim.set_anim);
88
89    }
90
91    private void setupAnimation(View view, final Animation animation,
92            final int animationID) {
93        view.setOnClickListener(new View.OnClickListener() {
94            public void onClick(View v) {
95                // If the button is checked, load the animation from the given resource
96                // id instead of using the passed-in animation paramter. See the xml files
97                // for the details on those animations.
98                v.startAnimation(mCheckBox.isChecked() ?
99                        AnimationUtils.loadAnimation(ViewAnimations.this, animationID) :
100                        animation);
101            }
102        });
103    }
104}
105